Restored animations for the reveal widget

core/modules/utils/dom/animations/slide.js

@@ -13,7 +13,8 @@ A simple slide animation that varies the height of the element
 "use strict";
 
 function slideOpen(domNode,options) {
-	var duration = $tw.utils.getAnimationDuration();
+	options = options || {};
+	var duration = options.duration || $tw.utils.getAnimationDuration();
 	// Get the current height of the domNode
 	var computedStyle = window.getComputedStyle(domNode),
 		currMarginBottom = parseInt(computedStyle.marginBottom,10),
@@ -65,7 +66,8 @@ function slideOpen(domNode,options) {
 }
 
 function slideClosed(domNode,options) {
-	var duration = $tw.utils.getAnimationDuration(),
+	options = options || {};
+	var duration = options.duration || $tw.utils.getAnimationDuration(),
 		currHeight = domNode.offsetHeight;
 	// Clear the properties we've set when the animation is over
 	setTimeout(function() {

core/modules/utils/fakedom.js

@@ -47,6 +47,15 @@ TW_Element.prototype.setAttributeNS = function(namespace,name,value) {
 	this.setAttribute(name,value);
 };
 
+TW_Element.prototype.removeAttribute = function(name) {
+	if(this.isRaw) {
+		throw "Cannot removeAttribute on a raw TW_Element";
+	}
+	if($tw.utils.hop(this.attributes,name)) {
+		delete this.attributes[name];
+	}
+};
+
 TW_Element.prototype.appendChild = function(node) {
 	this.children.push(node);
 	node.parentNode = this;